John Gleeson

Practice Areas

John Gleeson is a trial and appellate lawyer and company advisor who was a federal judge for 22 years before joining the firm in 2016. He is a litigation partner in the White Collar & Regulatory Defense and Commercial Litigation Groups. A fellow of the American College of Trial Lawyers, Judge Gleeson’s practice focuses on white collar defense, complex civil litigation, internal investigations, and dispute resolution. Since joining Debevoise, Judge Gleeson has argued cases in numerous federal and state courts of appeals, conducted trial proceedings in federal and state courts, appeared in multiple bankruptcy proceedings, acted as both a mediator and arbitrator in commercial disputes, conducted independent investigations, advised boards of directors on corporate governance matters, and provided expert testimony on United States law in multiple foreign tribunals.